Compilare: user.cpp:17:35: warning: integer overflow in expression [-Woverflow] int t[80000],f[80000],inf=(1<<31)-1,n; ^ user.cpp: In function ‘void dijkstra(int)’: user.cpp:28:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ^ user.cpp:21:18: warning: unused variable ‘g’ [-Wunused-variable] register int g,x,val; ^ user.cpp: In function ‘int main()’: user.cpp:42:20: warning: unused variable ‘j’ [-Wunused-variable] register int i,j,m,k,x,y,cost; ^